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Thu, 27 Aug 2026 13:16:18 -0700 (PDT) Received: from TC-LAPTOP ([2a01:e0a:b8a:2610:8824:7cb0:614c:86fd]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49b4961004bsm91899855e9.4.2026.08.27.13.16.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Aug 2026 13:16:17 -0700 (PDT) From: Thierry Chatard To: linux-kernel@vger.kernel.org Cc: hansg@kernel.org, lee@kernel.org, platform-driver-x86@vger.kernel.org, ilpo.jarvinen@linux.intel.com, djrscally@gmail.com, linux-media@vger.kernel.org, mchehab@kernel.org, sakari.ailus@linux.intel.com, jacopo.mondi@ideasonboard.com, nicholas@rothemail.net, andriy.shevchenko@intel.com, v.vitovt@gmail.com, Thierry Chatard Subject: [PATCH v9 0/6] Enable cameras on Dell Latitude 5285 2-in-1 Date: Thu, 27 Aug 2026 22:16:05 +0200 Message-ID: <20260827201611.99825-1-tchatard@gmail.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This series enables the front (OV5670/INT3479) and rear (OV8858/INT3477) cameras on the Dell Latitude 5285 2-in-1 under Linux. Per Documentation/process/coding-assistants.rst: this work was developed with help from an AI coding assistant (Claude Code, by Anthropic). I used it to help reverse-engineer the ACPI/TPS68470 bring-up, iterate on the board data, and draft these patches; I have reviewed and tested all of it on the hardware and take responsibility for the result. The series is interdependent (all six patches are needed for working cameras) and touches three subsystems: mfd (patch 1), platform/x86 int3472 (patches 2-4) and media (patches 5-6). It is probably best merged as one set - for example via platform-drivers-x86 with an immutable branch that the media and MFD trees can pull. Lee, an Acked-by on patch 1 (mfd) would help enable that; I'm happy to follow whichever merge approach the maintainers prefer. Changes since v8 (addressing Andy Shevchenko's review): - Patch 1: correct the subject prefix to "mfd:"; carry Andy's Reviewed-by. - Patch 2: fold the reverse-xmas-tree reorder in with the unsigned int conversion, so it is no longer left over in patch 3. - Patch 3: introduce a local "struct device *dev" and use it to shorten the board-data lines; return -ENODATA rather than -ENODEV when the board data is missing. - Regenerated as a single coherent series (one tree, git format-patch --cover-letter) with a proper diffstat, and sent as a new thread. Apologies for the malformed v8 posting. Earlier changelogs are in the v7 and v8 postings: v8: https://lore.kernel.org/all/20260826112452.13539-1-tchatard@gmail.com/ v7: https://lore.kernel.org/all/20260819140107.1329091-1-tchatard@gmail.com/ Tested on Ubuntu 25.10 (kernel 6.17.0-22-generic) and Ubuntu 26.04 (kernel 7.0.0-30-generic): both cameras working in Zoom, Chrome, and GNOME Camera via PipeWire. Also independently tested on the closely-related Dell Latitude 5290 2-in-1 (same IPU3/TPS68470/OV5670/OV8858/DW9714 stack) by Vitalii Tytskyi: https://github.com/vitovt/dell-5290-camera-kernel/tree/master/patches Thierry Chatard (6): mfd: intel-lpss: add resource conflict quirk for Dell Latitude 5285 platform/x86: int3472: tps68470: use unsigned int for GPIO lookup loop counters platform/x86: int3472: tps68470: fix clock consumer registration for Dell Latitude 5285 platform/x86: int3472: tps68470: add board data for Dell Latitude 5285 media: ipu-bridge: add sensor configuration for OV8858 (INT3477) media: ov8858: add ACPI device ID INT3477 drivers/media/i2c/ov8858.c | 7 + drivers/media/pci/intel/ipu-bridge.c | 2 + drivers/mfd/intel-lpss-acpi.c | 32 ++++ drivers/platform/x86/intel/int3472/tps68470.c | 109 ++++++----- drivers/platform/x86/intel/int3472/tps68470.h | 10 ++ .../x86/intel/int3472/tps68470_board_data.c | 170 +++++++++++++++++- 6 files changed, 281 insertions(+), 49 deletions(-) base-commit: 6de23f81a5e08be8fbf5e8d7e9febc72a5b5f27f -- 2.53.0